Selina's identity is currently secret. In recent years, it was known to a few of her close friends, including Batman and Nightwing. However, with recent changes to the Batverse, it appears that they don't know her identity.
Oh ok thanks. Cause in old comics it seems like everyone knows who she is and was like that in the old BTAS show too. But in recent books (before the reboot) it seemed like it wasn't widely known. So I was a bit confused. It doesn't help that alot of times she's shown with the googles off exposing her face like in the recent Arkham City game. Again though thank you!